What was one step that charlemagne took to unite his kingdom?

a.
he chose a single strong heir to inherit his throne.

b.
he drove muslim forces out of europe.

c.
he created and supported schools.

d.
he declared himself head of the catholic church.

Why have the aztec ruins in mexico city not been dug up?

What were some passive/non-direct ways that enslaved africans did to resist slavery?

Which of the following discoveries would be most likely to cause a scientific paradigm shift? a. the discovery of more rings around uranus b. the discovery of a new pathogenic virus transmitted by mosquitoes c. the discovery that a dormant volcano is showing signs of activity d. the discovery of a new species of salamander in the amazon rainforest e. the discovery that excess heat is radiating from the center of the earth and causing global climate change